I tried the kernel from bug 349314, it's not helping, as well as
2.6.28-12 kernel from jaunty-proposed. On the other hand, turning UXA
acceleration on indeed accelerates things, but it's unstable (X freezes
time after time).
$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel
@Ilya: bug 349314 isn't for this chipset, so that's why it doesn't help.
The good news is that bug 314928 has a different test version of the
kernel which fixes the MTRR allocation problems - maybe try that one and
report back on that discussion: try cat /proc/mtrr on the kernel you
have now,
If
Thank you for your advice, Zack, but this kernel doesn't solve the
performance problem as well. (It does, however, change the MTRR
allocation as intended.)
Repository kernel:
$ uname -a
Linux corner 2.6.28-12-generic #43-Ubuntu SMP Fri May 1 19:27:06 UTC 2009 i686
GNU/Linux
$ cat /proc/mtrr
** Description changed:
Binary package hint: compiz
After upgrading to Jaunty Alpha 5, compiz effects seem to happen in
slowmotion. Other operations are normal and the CPU load is close to
100% idle.
Direct rendering is enabled as shown by glxinfo | grep -i render
** Tags added: compiz
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[i945GM] (Needs UXA, kernel 2.6.30rc2) compiz slowmotion after Jaunty upgrade
https://bugs.launchpad.net/bugs/339555
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** Summary changed:
- [i945GM] (Needs kernel 2.6.30rc2, UXA) compiz slowmotion after Jaunty upgrade
+ [i945GM] (Needs UXA, kernel 2.6.30rc2) compiz slowmotion after Jaunty upgrade
--
[i945GM] (Needs UXA, kernel 2.6.30rc2) compiz slowmotion after Jaunty upgrade
